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  1. Home
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  3. Compare

Claude Opus 4.8 vs Claude Opus 4.8 (Fast)

Compare Claude Opus 4.8 from Anthropic and Claude Opus 4.8 (Fast) from Anthropic on key metrics including benchmarks, price, context length, and other model features. Access both models and hundreds of others through the OpenRouter API.

Favicon for anthropic
Claude Opus 4.8
Favicon for anthropic
Claude Opus 4.8 (Fast)
Favicon for anthropic
Claude Opus 4.8
Favicon for anthropic
Claude Opus 4.8 (Fast)

Overview

Claude Opus 4.8
Author
Anthropic
Claude Opus 4.8 (Fast)
Author
Anthropic
Claude Opus 4.8
Context length
1Mtokens
Claude Opus 4.8 (Fast)
Context length
1Mtokens
Claude Opus 4.8
Reasoning
Claude Opus 4.8 (Fast)
Reasoning
Claude Opus 4.8
Input modalities
Claude Opus 4.8 (Fast)
Input modalities
Claude Opus 4.8
Output modalities
Claude Opus 4.8 (Fast)
Output modalities

Claude Opus 4.8 vs Claude Opus 4.8 (Fast): side-by-side summary

Claude Opus 4.8 and Claude Opus 4.8 (Fast) are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.

Claude Opus 4.8, from Anthropic, has a 1,000,000-token context window and is priced at $5/M tokens input, $25/M tokens output on OpenRouter.

Claude Opus 4.8 (Fast), from Anthropic, has a 1,000,000-token context window and is priced by the provider serving it on OpenRouter.

Context window
  • Claude Opus 4.8: 1,000,000 tokens
  • Claude Opus 4.8 (Fast): 1,000,000 tokens
Price
  • Claude Opus 4.8: $5/M tokens input, $25/M tokens output
  • Claude Opus 4.8 (Fast): Pricing varies by provider
Provided by
  • Claude Opus 4.8: Anthropic
  • Claude Opus 4.8 (Fast): Anthropic
  • Claude Opus 4.8 model details, providers and pricing
  • Claude Opus 4.8 (Fast) model details, providers and pricing

Claude Opus 4.8 vs Claude Opus 4.8 (Fast) at a glance

Claude Opus 4.8 vs Claude Opus 4.8 (Fast) comparison
AttributeClaude Opus 4.8Claude Opus 4.8 (Fast)
Input price$5/M tokensPricing varies by provider
Output price$25/M tokensPricing varies by provider
Context window1,000,000 tokens1,000,000 tokens
Intelligence Index41.8Not available
Coding Index74.3Not available
Agentic Index41.9Not available
Latency (p50)0.91 sNot available
Throughput (p50)67.0 tok/sNot available

Benchmark data updated Oct 13, 2026

Frequently asked questions

Which has the longer context window, Claude Opus 4.8 or Claude Opus 4.8 (Fast)?

Claude Opus 4.8 and Claude Opus 4.8 (Fast) have the same context window of 1,000,000 tokens.